Boiler.



Patented Oct. 31, 1911.

AT'HJRNEY COLUMBIA PLANOGRAPH 50.. WASHINGTON. Dv c.

l '1 "N ITED STATES PATENT OFFICE.

JOHANN GEORGE BRIEGEL, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF ONE- TI-IIR-D TO WILLIAM H. OSWALD AND ONE-THIRD TO GEORGE E. WIELAND, BOTH OF LINDSAY, CALIFORNIA.

BOILER.

Specification of Letters Patent.

Patented Oct. 31, 1911.

Application filed April 1, 1910. Serial No. 552,750.

siding at Philadelphia, State of Pennsyl-' Vania, have invented a new and useful Boiler, of which the following is a specification.

My invention consists of a novel construction of water tube boiler wherein I have combined, in a single structure, various novel features of advantage, as will be hereinafter pointed out in the claim, whereby a very cheap and efficient boiler is produced, which is especially. adapted for use in locations where skilled labor is hard to obtain, means being provided whereby practically every portion of the boiler, when worn out, can be dismantled or taken down and replaced by an ordinary mechanic without necessitating the employment of skilled labor.

In a prior patent granted to me March 29, 1898, No. 601,335, I have described and broadly claimed a novel construction of a boiler and in my present invention I have shown an improved construction thereof which in practice will give very satisfactory and reliable results.

It further consists of other novel features of construction, all as will be hereinafter fully set forth.

For the purpose of illustrating my invention, I have shown in the accompanying drawings one form thereof which is at present preferred by me, since the same has been found in practice to give satisfactory and reliable results, although it is to be understood that the various instrumentalities of which my invention consists can be variously arranged and organized and that my invention is not limited to the precise arrange- .with suitable wheels for readily transporting the same from one place to another.

.The lower portion of the outer shell 1 has connected therewith in any suitable manner the fire-box casing 3 which is provided at vone end with a pivoted damper 4 and at its' opposite end with dampers 5'and 6 which control the admission of air to the burner 7 which, in the present instance, is designed for oil fuel.

8 designates the furnace lining which is provided with a bridge wall 9 having an inclined aperture 10 therethrough.

11 designates the inner shell, the lower portion of which is secured to the outer shell 1 by means of suitable rivets or equivalent fastening devices 12. A portion of the shell 11 is inwardly deflected as indicated at 13 in order to form a water retaining chamber 1 1 which is located above the source of heat for the boiler.

15 designates the lower portion of the casing 1 which latter, in the present instance, is composed of two parts and this lower portion 15 is provided with any desired number of suitably controlled ports 16 whereby the water chamber 14:' may be cleaned out when desired.

17 designates an annular flange or angle iron which is secured to the lower portion 15 of the casing 1 and also to a similar annular flange 18, said flanges being secured together by the rivets 19, it being seen that the flange 18 is secured to the portion 20 of the casing 1.

21 designates a series of tubes which as best seen in Fig. 2 extend transversely through the inner casing 11 and in order to provide a device whereby these tubes may be readily cleaned when desired I provide a series of apertures 22 in alinement with the different tubes and I provide a plate 23 which is riveted on the outer shell 1 and provided with apertures 24 which are adapted to register with the apertures 22 in the shell 1. The apertures 24 are closed by any suitable means. I

25 designates the stack which is suitably secured to the inner casing 11 and extends through the upper end of the outer casing 1 and owing to the provision of the angle plate 26 secured to the outer casing a water' and steam tight connection is formed between the stack 25 and the casing 1.

27 designates an injector feed port and 28 designates the steam outlet port, it being of course understood that provision is made for securing gage cocks, water columns or other equipment in position with respect to the boiler.

It will be apparent that in the embodiment of my invention illustrated I have shown a boiler comprising an inner and outer shell the inner shell carrying the boiler tubes and adapted to be bodily removed from the outer shell when the end fastening devices are removed, so that the boiler tubes may be readily cleaned and repaired when desired. It will be further apparent that in the embodiment of my invention I employ reinforcing plates which are constructed and correlated in a novel manner in order that the casing and boiler will be reinforced to requisite standards of capacity. I It will now be apparent that I have devised a novel and useful construction of a boiler which embodies the features of advantage enumerated as desirable in the statement of the invention and the above description, and while I have in the present instance shown and described a preferred embodiment thereof which has been found in practice to give satisfactory and reliable re-- sults, it is to be understood that the same is susceptible of modification in various particulars without departing from the spirit or scope of the invention or sacrificing any of its advantages.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is

In a water tube boiler, an outer casing comprising a lower section 15 suitably supported and provided with an annular angle iron 17 secured to the upper portion thereof, an upper casing section 20 having an annular angle iron 18 secured to said angle iron 17, an angle plate 26 secured to the upper inner portion of said casing section 20 and adapted to project inwardly, an inner water tube supporting shell 11 having its lower portion secured to the lower portion of the casing section 15 by suit- ,able fastening devices 12, a water retaining chamber 14 secured in the lower portion of said inner shell 11 and projecting laterally and inwardly therefrom, the upper portion of said water retaining chamber extending above the line of junction between said sections 15 and 20, a series of horizontal water tubes arranged transversely and having their ends secured in said inner'shell 11, a stack secured to said inner shell and projecting upwardly through and beyond said angle plate 26 and in water tight juxtaposition therewith, a series of laterally elongated apertures 22 in the said outer section 20 arranged alternately in alinement with the laterally extending water tubes 21 and adapted to receive suitable closures, and elongated reinforcing plates 23 riveted to said outer section 20, said laterally elongated openings 22 and plates 23 extending partially around said upper section and being arranged in staggered order vertically so as to permit of access to all of the alternate ends of said juxtaposed transverse water tubes in the same plane as said elongated opening, said lower section 15 being adapted to have trunnions 2 secured thereto and projecting outwardly therefrom at a point be yond the central axis of the boiler.

JOI-IANN GEORGE BRIEGEL.

l/Vitnesses:

HERBERT S. FAIRBANKS, C. D. MOVAY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

